Prodotti della ricerca

 
Titolo: Functionalization of polycrystalline gold through the electroreduction of aryldiazonium salts in ionic liquids
Autori: 
Data di pubblicazione: 2014
Rivista: 
CHEMICAL ENGINEERING TRANSACTIONS  
Abstract: In this work the electrochemical functionalization of polycrystalline gold with a nitro-phenyl layer has been studied. The surface modification has been performed by cyclic voltammetries through the electroreduction of 4-nitrobenzenediazonium salt (NBD) using as solvent the ionic liquid 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl) imide ([BMP][TFSA]). The presence of phenyl groups on the electrode surface was studied by cyclic voltammetry and electrochemical impedance spectroscopy (EIS). The barrier propriety of nitro-phenyl modified gold surfaces were characterized by EIS using Fe(CN)6 3- / Fe(CN)6 4- as a redox probe. The results indicate that nitro-phenyl groups are present on gold surface. The increase in the scan rate during the reduction of NBD in ionic liquid leads to a less covered surface as indicated by a decrease in the charge transfer resistance for the redox probe. Moreover, using the ionic liquid as solvent, lower amount of the attached molecules and a less dense layer are obtained.
Handle: http://hdl.handle.net/11584/106647
ISBN: 978-88-95608-32-7
Tipologia:4.1 Contributo in Atti di convegno

File in questo prodotto:
Non ci sono file associati a questo prodotto.
credits unica.it | accessibilità Università degli Studi di Cagliari
C.F.: 80019600925 - P.I.: 00443370929
note legali | privacy

Nascondi la toolbar